Defensive publication

ABSTRACT

THE ADDITION OF 3-AMINO-4-MEHTYL-2-(3HE)-THIAZOLETHIONE, EITHER IN A HYDROPHILIC COLLOID OVERLAYER ON A PHOTOELEMENT PREPARED WITH VACUUM-DEPOSITED SILVER HALIDE OR TO THE DEVELOPING COMPOSITION FOR SUCH AN ELEMENT, OPERATES TO REDUCE THE GRAININESS OF THE DEVELOPED PHOTOGRAPHIC SILVE IMAGE.

EFENS E PUBLlGATlON UNITED STATES PATENT OFFICE Published at the request oi! the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oliice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED AUGUST 31, 1971 T889,01l5 GRAIN INHIBITOR FOR VACUUM-DEPOSITED SILVER HALIDE ELEMENTS Arthur A. Rasch, Kodak Park, Rochester, N.Y. 14650 Filed Sept. 18, 1970, Ser. No. 73,676 Int. Cl. G03c 1/06, 5/30 No Drawing. 10 Pages Specification The addition of 3-amino-4-methyl-2-(3H)-thiazolethione, either in a hydrophilic colloid overlayer on a photoelement prepared with vacuum-deposited silver halide or to the developing composition for such an element, operates to reduce the graininess of the developed photographic silver image. 

